Windows Phone 8.1 builds in iCloud calendar and contacts sync

The new features in Windows Phone 8.1 just keep rolling in. You can now sync your WP8.1 phone with Apple iCloud contacts and calendar.

Go to Settings > Email + Accounts > Add an account...and you'll see iCloud in the list. Tap it and add your Apple ID details and you have the option to include contacts and calendar, but not email.

It means you can keep your contacts and calendar synced between your Windows Phone and, say, an iPad.